mod_access.c revision b980ad7fdc218b4855cde9f75a747527f50c554d
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering/* ====================================================================
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * The Apache Software License, Version 1.1
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Copyright (c) 2000 The Apache Software Foundation. All rights
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Redistribution and use in source and binary forms, with or without
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * modification, are permitted provided that the following conditions
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 1. Redistributions of source code must retain the above copyright
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * notice, this list of conditions and the following disclaimer.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 2. Redistributions in binary form must reproduce the above copyright
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * notice, this list of conditions and the following disclaimer in
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * the documentation and/or other materials provided with the
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * distribution.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 3. The end-user documentation included with the redistribution,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * if any, must include the following acknowledgment:
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * "This product includes software developed by the
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Apache Software Foundation (http://www.apache.org/)."
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Alternately, this acknowledgment may appear in the software itself,
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering * if and wherever such third-party acknowledgments normally appear.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * 4. The names "Apache" and "Apache Software Foundation" must
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * not be used to endorse or promote products derived from this
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen * software without prior written permission. For written
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * permission, please contact apache@apache.org.
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen * 5. Products derived from this software may not be called "Apache",
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * nor may "Apache" appear in their name, without prior written
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * permission of the Apache Software Foundation.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
db73295accbec0c6513817f0a64a92018592bb26Lennart Poettering * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
d8500c53789eafefe28d4ace088bf4b912280bf9Tom Gundersen * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
9085f64a6694f2928c79fcce365edb1dca6937d4Lennart Poettering * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * SUCH DAMAGE.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * ====================================================================
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * This software consists of voluntary contributions made by many
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * individuals on behalf of the Apache Software Foundation. For more
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * information on the Apache Software Foundation, please see
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Portions of this software are based upon public domain software
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * originally written at the National Center for Supercomputing Applications,
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * University of Illinois, Urbana-Champaign.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Security options etc.
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering * Module derived from code originally written by Rob McCool
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringtypedef struct {
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering unsigned long net;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering unsigned long mask;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering/* things in the 'order' array */
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringtypedef struct {
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringmodule AP_MODULE_DECLARE_DATA access_module;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic void *create_access_dir_config(apr_pool_t *p, char *dummy)
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering (access_dir_conf *) apr_pcalloc(p, sizeof(access_dir_conf));
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering for (i = 0; i < METHODS; ++i)
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering conf->allows = apr_make_array(p, 1, sizeof(allowdeny));
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering conf->denys = apr_make_array(p, 1, sizeof(allowdeny));
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering return (void *) conf;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poetteringstatic const char *order(cmd_parms *cmd, void *dv, const char *arg)
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering access_dir_conf *d = (access_dir_conf *) dv;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering else if (!strcasecmp(arg, "mutual-failure"))
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering return "unknown order";
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering for (i = 0; i < METHODS; ++i)
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering while ((*host == '.') || apr_isdigit(*host))
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poetteringstatic const char *allow_cmd(cmd_parms *cmd, void *dv, const char *from,
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering access_dir_conf *d = (access_dir_conf *) dv;
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering char *where = apr_pstrdup(cmd->pool, where_c);
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering return "allow and deny must be followed by 'from'";
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering a = (allowdeny *) apr_push_array(cmd->info ? d->allows : d->denys);
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering unsigned long mask;
6d0c65ffb4f82e8c6dceb453919b3db54343fc27Lennart Poettering /* trample on where, we won't be using it any more */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering || (a->x.ip.net = apr_inet_addr(where)) == APR_INADDR_NONE) {
f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt return "syntax error in network portion of network/netmask";
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* is_ip just tests if it matches [\d.]+ */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return "syntax error in mask portion of network/netmask";
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering /* is it in /a.b.c.d form? */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return "syntax error in mask portion of network/netmask";
f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt /* assume it's in /nnn form */
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return "invalid mask in network/netmask";
ab1525bc2d92780b4dc64bc5b9cdb52594e2df7dLennart Poettering a->x.ip.net = (a->x.ip.net & mask); /* pjr - This fixes PR 4770 */
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering else if (apr_isdigit(*where) && is_ip(where)) {
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering /* legacy syntax for ip addrs: a.b.c. ==> a.b.c.0/24 for example */
d57c365bf8f09fbcc649e00f7060ff30809f67c2Lennart Poettering /* parse components */
3e3db0ee860025ad663b13b0ace4e6d627611332Lennart Poettering return "invalid ip address";
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering if (*t == '.') {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering else if (*t) {
ee8c45689526ca973407cbb77bce7b96a062c40bLennart Poettering return "invalid ip address";
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen return "invalid ip address, only 4 octets allowed";
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen return "each octet must be between 0 and 255 inclusive";
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen "'allow,deny', 'deny,allow', or 'mutual-failure'"),
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen AP_INIT_ITERATE2("allow", allow_cmd, &its_an_allow, OR_LIMIT,
81fd1dd3a2cf4cc90a6898d562c9bb0fb238cbd7Tom Gundersen "'from' followed by hostnames or IP-address wildcards"),
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen AP_INIT_ITERATE2("deny", allow_cmd, NULL, OR_LIMIT,
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen "'from' followed by hostnames or IP-address wildcards"),
69fb1176c403e437c4fba763ba242b540c73898fLennart Poetteringstatic int in_domain(const char *domain, const char *what)
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen /* Make sure we matched an *entire* subdomain --- if the user
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen * said 'allow from good.com', we don't want people from nogood.com
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen * to be able to get in.
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen return (domain[0] == '.' || what[wl - dl - 1] == '.');
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersenstatic int find_allowdeny(request_rec *r, apr_array_header_t *a, int method)
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen for (i = 0; i < a->nelts; ++i) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if (apr_table_get(r->subprocess_env, ap[i].x.from)) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen /* XXX handle IPv6 with separate T_IP6 type or add common
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen * address masking operations to APR */
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen && (r->connection->remote_addr->sa.sin.sin_addr.s_addr
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen remotehost = ap_get_remote_host(r->connection, r->per_dir_config,
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if ((remotehost == NULL) || is_ip(remotehost))
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen if ((gothost == 2) && in_domain(ap[i].x.from, remotehost))
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen /* do nothing? */
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen ap_get_module_config(r->per_dir_config, &access_module);
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen else if (a->order[method] == DENY_THEN_ALLOW) {
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen && (ap_satisfies(r) != SATISFY_ANY || !ap_some_auth_required(r))) {
c09da72900b03fcddade06643f24c6357f3e0482Tom Gundersen ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen "client denied by server configuration: %s",
b6a3ca6d876ab59b4f29ed67f54ef87005177906Tom Gundersen ap_hook_access_checker(check_dir_access,NULL,NULL,APR_HOOK_MIDDLE);
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering create_access_dir_config, /* dir config creater */
1693a943ca581aca2beebb4c812ec6c9f17b8164Lennart Poettering NULL, /* dir merger --- default is to override */